Rattus norvegicus vs derogation

Rattus norvegicus and derogation both are nouns.

Word	Noun	Adjective	Verb	Adverb
Rattus norvegicus	Yes	No	No	No
derogation	Yes	No	No	No

Rattus norvegicus (noun)	derogation (noun)
common domestic rat; serious pest worldwide	(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law
	a communication that belittles somebody or something